Dowel.



' R. SIBPERn Down.. AP PLIOATION FILED DEU. 2B, 1,908)

Patented Aug. 23, 1910.

tain new 't5 reference is to be had to the following de- '20 vention..

.40 inner faces as indicated at 4.

45. through' the stiles and into the cross bar,

t3 E STATES;

nownri.

To all whom it 'may eminem:

Be it known that I, Bierman Smrnn, sub ject of4 the German Empire, `resi-ding at Ldenscheid, (lermanm have invented cerand useful Improvements gin Do'wels, ot' which theollowingis a speci* cation. This invention has for its object a simple, durable and eiiic'ient construction of a holiow metallic doweh and the `invention con" sists in certain constructions,. arrangements and combinations of theparts that-I shall. hereinalterifully describe and claim.

For a full understanding of the invention,

scription and accompanying drawings in which: Figure 1 is a perspective view` illustrating the' application `of one forni of my inl `ig'.-2is a -front elevation of a' corner of a window sash withthe invention incorporated therein; parts being broken away and other parts in section; Fig. 3 is a --,-detail perspectiveview of one of the dowels in its initial condition; Fig. 4 is a similar -view 'of the tanged end of the dowel.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings by the same reference characters. vReferring to the drawing, the Inumeral l designates the body portion of'myimproved dowel which is made tubular as shown. At, one end, the body portionis formed with an outstanding ange 2'and at its other end itv is formedwith; a plurality of tangs 3 which initially extend outwardly therefrom in longitudinal 'alinement therewith, the extremities ofv said= tangs being beveled on their ejractical use -of my. improved flanged doivel to secure anytwo parts together, as forinstanee,'the cross bar and stiles of a windowsash, holes are bored l said holesheing somewhat less indepth than is claimed as new is:

the length of the body portion 1. The dowel specification of Lettergratent. Patemm Aug.' 23g 19m, application med December 2s, 1908.

serial no. 469,585.

is then inserted in said hole and driven forcibly therein, the Harige 2 serving as a driving head, as well as a retaining member to securely hold the part with which it engages, Preferably .the flange is counter'sunk inthe part in which it is located. As the dowel isdriven "horned7 the beveled eX treniities of the tangs 3 compel the tangs to spread outwardly and the' dowel is thus securely clenched 1n thefwood.

It will be seen that the body portion of my improved dowel with the exceptionoi the outstanding liange 2 is of uniform ci;k terior Adiameter throughout; including lthe tangs 3. Hence the dowel. may be easily itivserted in the hole which -is bored for it, as there are no initially formed outwardly pro jecting tang-s, the clenching of the dowel in place after the bottom of the hole ha's been reached being* effected by the beveled ex,- treniities of the tangs.

.Having thus de'scribedthe invention, what As anew article of manufacture, the herein described dowel -consisting `of a tubular body-portion which is hollow throughout its entire extent and provided at one end with tangs, said tangs being beveled on their in- -ner sides at their extremities and project ing in true longitudinal planes yfrom one end of the body'portiom the spaces between the tangs being greater than the width of said tangs, and the. b'ody portion and the tangs being. of uniform exteriorand interior diameter throughout with the .exception of the beveled extremities of the tangs, the body portion being formed at itsend opposite the tangs `with, an outwardly tu ed 'Harige designed to serve as a driving ead as Well as a retaining member;

In testimony whereof I aiiix my signature in'presence -of two witnesses.

RICHARD sieren; [n a] Witnesses:

OTTO KNIG; WALTER EGLINSHAM. 

